Sizzler
| Sizzler in Los Angeles | |
| Sizzler | |
| Company type | Private | 
| Industry | Restaurants | 
| Founded | 1958 in Culver City, California, as Del's Sizzler Family Steak House | 
| Founders | Del and Helen Johnson | 
| Headquarters | Mission Viejo, California, U.S. | 
| Number of locations | 84 | 
| Area served | United States Japan Thailand | 
| Key people | James A. Collins (CEO; 1967–1999) Christopher Perkins (CEO; 2019–present) | 
| Products | Steak, seafood, salads | 
| Owner | Management (United States) Royal Holdings Co., Ltd. (Japan) Minor International (Thailand) | 
| Website | www | 
Sizzler USA Restaurants, Inc., doing business as Sizzler, is a United States–based restaurant chain with headquarters in Mission Viejo, California, with locations mainly in California, plus some in the nearby states of Arizona, Nevada, New Mexico, Idaho, Utah, and Oregon, as well as Puerto Rico. It is known for steak, seafood, and salad bar items.
Since 2023, Sizzler restaurants outside of the United States are owned by Thailand-based Minor International and are not related to the American firm.
In September 2020, Sizzler USA filed for Chapter 11 bankruptcy due to the COVID-19 pandemic hurting sales. The bankruptcy filing does not affect the similarly named Minor International affiliated restaurants that are located outside of the United States. Sizzler USA emerged from bankruptcy in January 2023.